docs: def tensor_to_6component(tensor, frame='USE'):
      '''
      Returns a tensor to six component vector [Mrr, Mtt, Mpp, Mrt, Mrp, Mtp]
      '''
      if 'NED' in frame:
          tensor = ned_to_use(tensor)
  
      return [tensor[0, 0], tensor[1, 1], tensor[2, 2], tensor[0, 1],
              tensor[0, 2], tensor[1, 2]]